I've been going back and forth on this for a while. On one hand, spinning up your own filtering layer on a VPS gives you full control over blocklists, query logs, and custom rules. On the other hand, managed services handle updates, scaling, and DDoS resilience out of the box. The total cost picture (infra + maintenance time vs. subscription fees) seems like it could go either way depending on scale. For founders running side projects or small SaaS, what threshold made you switch from one approach to the other? Curious how others think about the trade-off between operational complexity and monthly burn.
Is it worth running your own DNS-level filtering stack instead of relying on managed services?
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I ran my own Pi-hole + Unbound setup on a $5 VPS for about two years before finally biting the bullet on NextDNS. Honestly the breaking point for me wasn't cost, it was the moment I had to explain to a non-technical co-founder why the staging environment couldn't resolve domains at 2am because I forgot to update the blocklists. Managed services win when your downtime becomes someone else's problem.
That said, if you're under maybe 5k MAU and your "customers" are forgiving (internal tools, dev environments, hobby SaaS), self-hosted absolutely makes sense. The math changes once you're paying for support tickets or losing sleep over DNS outages. A reasonable heuristic: if you can't afford to spend a weekend every quarter maintaining it, just pay the subscription. The $20-50/month you save self-hosting is rarely worth the context-switching cost once your project has real users. I keep a small self-hosted instance for my home network and a few dev VMs, but anything customer-facing goes through managed now.
We hit this exact crossroads about 8 months ago with our side project (a small B2B SaaS, ~3k MAU at the time). I started with Pi-hole + Unbound on a $6 VPS thinking I'd be the clever ops guy — full logs, custom blocklists, the whole deal. It worked fine for the first couple months, but the moment we started getting weird query patterns and wanted to add per-tenant rules, I was spending my Sunday nights debugging why a specific client's downstream service kept timing out. Turned out one of my "aggressive" blocklists was eating a CDN domain.
We switched to a managed DNS filtering provider around the 5k MAU mark and honestly the calculus changed for us not because of cost (the subscription was roughly what I was paying for the VPS anyway) but because the *time tax* wasn't worth it. My hourly rate even at side-project scale made the 3-4 hours/month of maintenance worse than the $40/mo we now spend. The tipping point for me was when I realized I'd built a second job I wasn't getting paid for.
That said, if you're doing something where query logs are actually a product feature (ad tech, analytics, threat intel), self-hosting is probably non-negotiable. But for general "block malware and trackers" use cases on a side project, I'd argue managed wins until you're big enough that the operational complexity *is* the business.